From 6c90271b1d20235d917509454dc1b4e4a66f13f6 Mon Sep 17 00:00:00 2001
From: xengineering <me@xengineering.eu>
Date: Mon, 27 Sep 2021 12:09:19 +0200
Subject: Cleanup Code

---
 src/main.c | 33 ++++++++++++++++++---------------
 1 file changed, 18 insertions(+), 15 deletions(-)

(limited to 'src')

diff --git a/src/main.c b/src/main.c
index 1027d18..f8b803b 100644
--- a/src/main.c
+++ b/src/main.c
@@ -2,7 +2,6 @@
 
 
 #include <libopencm3/stm32/rcc.h>
-#include <libopencm3/stm32/flash.h>
 #include <libopencm3/stm32/gpio.h>
 #include <libopencm3/stm32/timer.h>
 #include <libopencm3/cm3/nvic.h>
@@ -10,10 +9,11 @@
 
 static void clock_init(void);
 static void gpio_init(void);
-void tim2_isr(void);
 static void nvic_init(void);
 static void timer_init(void);
 
+void tim2_isr(void);
+
 
 void main(void)
 {
@@ -43,13 +43,6 @@ static void gpio_init(void)
 }
 
 
-void tim2_isr(void)
-{
-	gpio_toggle(GPIOC, GPIO13);
-	TIM_SR(TIM2) &= ~TIM_SR_UIF;  // clear interrrupt flag
-}
-
-
 static void nvic_init(void)
 {
 	nvic_enable_irq(NVIC_TIM2_IRQ);
@@ -59,10 +52,20 @@ static void nvic_init(void)
 
 static void timer_init(void)
 {
-	gpio_set(GPIOC, GPIO13);
-	TIM_CNT(TIM2) = 1;               // set start value
-	TIM_PSC(TIM2) = 1440;            // set prescaler
-	TIM_ARR(TIM2) = 50000;           // interrupt value
-	TIM_DIER(TIM2) |= TIM_DIER_UIE;  // update interrupt enable
-	TIM_CR1(TIM2) |= TIM_CR1_CEN;    // enable timer
+	// set LED on
+	gpio_clear(GPIOC, GPIO13);
+
+	// setup timer
+	timer_set_counter(TIM2, 1);
+	timer_set_prescaler(TIM2, 1440);
+	timer_set_period(TIM2, 50000);
+	timer_enable_irq(TIM2, TIM_DIER_UIE);  // set action to trigger interrupt
+	timer_enable_counter(TIM2);
+}
+
+
+void tim2_isr(void)
+{
+	gpio_toggle(GPIOC, GPIO13);
+	TIM_SR(TIM2) &= ~TIM_SR_UIF;  // clear interrrupt flag
 }
-- 
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